Septic tank



F, F. BEEBY.

SEPTIC TANK.

APPuAmh FILEU ;uv.12, 1919.

1,381,615. 5, Pate-med Jun@ 14, 1921,

" spetir tank which is easy rter orrien.

FRANK F. BEEBY, 0F CHICAGO. ILLINOIS, ASSIGNOR, BY DIRECT AND MESNE ASSIGN`V Ii'LNTS,v OF ONE-HALF TO CEMENT-GUN CONSTRUTION COMPANY. OF CHICAGO ILLINOIS, A CORPORATION OF ILLINOIS. AND ONE-HALF TO CEMENT PRODUCTS) COMPANY. OF WILMINGTON. NORTH LINA.

Application led November 12, 1919.

le it known that l. l"ii.\.\i l". llicianr. a citizen ot' the l'nited States. residing at (`hicago. in the eonniy ot (`ook and x*tate of Illinois. have. invented a eerlain'new and nselul Iniprovenient in Septie Tanks, of whirh the folhnving is a spiw'itiration.

My invention relates toia septir tank Ator the disposal of sewage. and niore partienf larly to a tank wherein the raw sewage is passed eonseeutively through a plurality of containers. llxpei ienre. has shown that bat.'- terial aetion takes plaee. beginning in the first container and eontinniiig i'n the others` whieh dissolves or breaks up the solid niattei' in the sewage. Not only is all solid inatter whirh would be ditlieult of disposal entirely broken down. bnt the hai-nihil baeteria are largely destroyed. This nietliod. whieh Yas developed by otlieers of the nited States lublie llealth A\er\'iee. is bast-don the. t'aet that in sewage two distinet kinds olf organismsA develop. anaerobie baeteria, whieh areI harmless. and disease baeteria. These two classes of haeteria thrive under opposite eonditions. rl`he anaerobie. or harmless barteria thrive in the absenee oli oxygen and light. but the disease gerins, are as dependent on air and light, as are hnnian beings. l

The. eonditions in the septic tank are thus fayorable to the harmless bacteria. lint are extremely unfavorable to the disease haeteria, whose troubles are augmented by the tart that the anaerobie bacteria prey upon them. A s the sewage passes through the septie tank. the anaerobic bacteria destroy the disease germs. weakened as they are by the absence ot' oxygen and light, and aetively attack alll solid substances `and Vrednee thein to the consistency of a, liquid. This liquid ean easily be disposed ot by drainage into soil or sewer.

In niy invention I build a unit eoncrete to make, easy to handle, and easyvto install. Other advantages will appear from time to time in the eonrse of the speeitieations.

l illustrate my invention more or less dia-v graniniatieally in the followii'ig drawings wherein Fiful'e l is a A)lan View ot In i se itie tank; b V

Specification of Letters Patent.

`drain K. through which vbelow the top ot the tank is CAROLINA, A CORPORATION OF NORTH CARO- SEPTIC TANK.

Patented June .l 4t, 1921. Serial No. 337,516.

'Figa L) is a side elevation and phantom View;

Fig. il is a side elevation at fifi' degrees to Fig. L). with away;

l"ig. 4 is a` plan View oll iny tank with the rover in plat-e.

l Like letterel indicate like parts in all the ligi'u'es. A is an outer reintoreed eonerete eyliinler with a bottoni li integral with it. and an interior eylinder (l ii'lteg-ral with the bottoni B. Connerting the vlinder A\ and and east integrally therewith are th rfint'oreed eonrrete bailles l) D1 and l" wheh extend l'roni the upper lipsl et thi` shells a` substantial distance. downward to ward their bottoms. DI is a wall eoniieeting the two eylinders, and extending t'roin top to bottom thereof. 'lhe three battles aild the wall divide the spare between the evlinders into four partially detaelied ser-tions or ehanibers D* D5 D D7 and E is a sewage inlet adjaeent the top of the tank. eoniniunieating with the spare DT adjaeent the wall l*` is a eonneeting pipe. rent or openingl adjaeent the fop ot' the eylinder extending vtroni the spare D4 on the opposite side ot 1). into the interior or eentral tank (i of the inner shell. This vent being plaeed on the opposite side ot' the wall D Jtroni the inlet li. sewage to pass Jfroni the outer to the inner elianiber inust eireulate about the whole periphery olthe tank. beneath the three battles. At the renter ot' the bottoni ot the interior tank. is plaeed a siphon pipe ll provided with the rover ll. adapted eoinpletely to empty the tank. whenever the liquid reaehes the height of the siphon pipe. This siphon pipe is bent to forni a trap ll. and feeds into the drain pipe I.l The lower end and bend oll the siphon pipe. and the drain pipe are inelosed in a bloek o'l' eoiierete lli? projeeting beneath and integral with the bottoni l oll the septietank. The drain pipe l eonneets with the usual tile the liquid passes to the point of linal disposal.V Bridging the spare between the eylinders and interior tank. at a point not an angle ot' parts broken substantially a vent pipe li conneeted bya branch pipe K1 to the drain K. Each one oi" the sections, D D l) D" of reaehing thel j the outer tank is covered by a 'separate reinforced conci-ete slab M, Mi, M2, M, having grooves or lips to keep it `in place. The centraltank is covered by a circular slab M4 which'rests on the inner circle of the tour outer slabs.

The method of construction of my septic tank'is as follows:

An outer form which l have not illustrated, since its surface corresponds tojthe lower and outer surface of the outside' tank, is first placed and the siplion and discharge pipes are placed in the cavity later represented by the block or projection Concrete is then poured to a point high enough to l rm the bottom ofthe tank. An inside form is then placed, which forms the inside wall of the mold tor the outer wall.

wall, theidivisioii wall, and the baille plates are poured. Blocks are placed iii these forms to form openings in the `walls for the insertion'ot the Various pipes` above mentioned. I use pipes of cast concrete or cast iron, and itfand grout them into place in their respective openings. The pipes that project, through the outside walls will in' most cases not be inserted until the septic tank has been placed in position.

lf have illustrated an operative lseptic tank, butit is obvious lthat great variati-ons of shape, proportion, and disposition of parts' mig-ht be made without departing' from the spirit of my invention. .In particular, the chambers need not be circular and the outer chambers need not entirely surround the' central tank. Various arrangements ot these tanks might be made.

The use and operationof my invention are as follows:

lt is common practice to build'se-ptic tanks in the form of a plurality of separate cylinders, or containers of various forms, which must be separately handled, assembled, and connected. The separate tanks add to the difficulty and expense ot installation, and ,furnish by theirv connections additional sary lpipes and possible points for leakage, or l provide a. septic tank which as a unit, much reducing Athe cost joints, breakage.

can be cast of manufacture. tank is inclosed Within the fir-st, so that but one tank` has to be handled. Since lean by my arrangement of chambers build it in cylindrical form, it can easily be rolled by the workmen into place, making installation easy. The tank lids which are ordinarily large, unwieldy, hard to handle, and easily broken, l make in easily handled sections. No ione4 of them is too large ,fon a single workman to carry. When my septic tank is installedthe workmen can insert the necesand make the necessary connections,` but it will be noticed that in my entire n also forms arnold into which the inner tank.

Furthermore the secondA septic tank system there are but three external connections and but one tank unit.

ln the operati-on the sewage reaches the outer tank through the sewage inlet E, and

Aflows about the outer tank, under the baiiles which cause the sewage to have a more uniform ilow. The liquefied sludge then passes into the inner tank where the process is completed. When the liquid in the 'inner tank reaches the siphon height, the siphon operates, and the tank practically completely empties itself. The extravent pipe to the central tank allows the air to pass back into the inner chamber, when the liquid is being siplioned off, thereby preventing the stopping of the siphoning action by the forming of a vacuum in the'smaller tank.. ltyalso allows the. air and `gases to pass off into the tile when the central tank is being`-llled. The circular forni of my tank, with thef'jir ner cylinder and the Wall and baille connections between the two cylinders, furnishes a reinforced structure which is tho-roughly l.. A closed septic tank for the disposal of sewage, comprising an outer chamber; arid an inner chamber inc losed therein, a .sewage inlet into said outer chamber, a connection between the two chambers, an outlet from theimier chamber, and means forfor'cing the sewage to travel entirely about the outer chamber before entering the inner chamber.`

Y 2., A septic tank 'for the disposal of sewage, comprising an outer chamber, and an inner chamber inclosed therein, a sewage Vinlet into said outer chamber, a connection between the two chambers, an outlet from the dimer chamber, and means for forcing the sewage to travel entirely about the outer chambeil before'entering the inner chamber, comprising av wall across the outer chamber adjacent and between the sewage inlet and the connection between the two chaiiibersi 3. .A septic tank for the disposal of sewage, bomprising an outer chamber, and an inner chamber inclosed therein, a Sewage' inlet into said outer chamber, a connection between the two chambers, an outlet from the inner chamber, means for forcing the sewage to' travel entirely about the outer chamber before entering the inner chamber,

,comprising a wall across the outer chamber and adiaceiit and'between the inlet, and a connection between the chambers, and a plurality of batlles in the outer chamber along the course followed by the sewage.

l, l. Afclosed septic tank for the disposal of sewage, comprising a cylindrical outerchamber, a cylindrical inner chamber -inclosed therein, a sewage inlet into said outer chain bei; a connection between theatw'ochambers,

and au. outlet from the innerchamber, meansl va single lid for the inner for forcing the sewage to travel entirely about the periphery of the outer chamber before entering the inner one.

5. A septic tank for the disposal of sewage, comprising a cylindrical outer chamber', and a cylindrical innerchamber inclosed therein, a sewage inlet into said outer chamber, a connection between the two chambers, an outlet from thc inner chamber, and means for forcing the sewage to travel entirely about the outer chamber before entering the inner one, comprising a substantially radial wall across the outer chamber adjacent and between the inlet and a connection between the chambers.

6. A septic tank for the disposal of sewage, comprising a cylindrical outer chamber, and a cylindrical inner chamber inclosed therein, a sewage inlet into said outer chamber,- a connection between the two chambers, an outlet from the inner chamber, and means for forcing the sewage to travel entirely about the outer chamber before entering the inner one, comprising a substantially radial wall across the outer chamber adjacent and between the inlet and a connection between the chambers, and a plurality of substantially radial baille members extending across the outer chamber.

7. A tank comprising an outer wall, and an inner wall therewithin, bafiies connecting said Walls and dividing the outer chamber into a plurality of sections, separate lids on each of said outer chamber sections, and

chamberas 8. A tank comprising an outer wall, and an inner wall therewithin, baffles connecting said Walls and into a plurality of sections, separate lids on dividing the outer chamber j each of said outer chamber sections, and a single lid for the inner chamber adapted t0 rest on the inner edges of said separate lids.

9. A. tank comprising a cylindrical outer, a cylindrical inner wall, substantially radial bailies connectingT said walls and dividing the outer chamber separate lid Jfor each of single lid for the inner chamber.

l0. A tank comprising a cylindrical outer, a cylindrical inner wall, substantially radial batlies connecting' said walls and dividing the outer chamber into sepa-rate segments, a separate lid for each of said segments, and a single lid for the inner chamber, adapted to rest on the inner edges of said separate lids.

l1. A septic tank for the disposal of'sew age, comprising an outer cylindrical casing,

into separate segments, a? said segments, anda an inner cylindrical casing concentric therewith, said cylinders integral and closed by a bottom integral with both, a plurality of substantially radial bellies connecting said cylinders, a substantially radial wall connecting said cylinders, a sewage inlet, an outer cylinder adjacent the .radial Wall, a sewage passage from the outer to the .inner cylinder, adjacent but on the opposite side of said wall, a siphon outlet from the bottom of `said inner cylinder, an additional outletadjacent the top of said inner cylinder, said outlets joined outside of the tank.

In testimony whereof, I allix my s1 ature in the presence of'two witnesses this 2 th day of October, 1919. V

FRANK F. BEEBY. Witnesses:

' ARTHUR JOHNSON,

JOHN N. SOHARIN. 

